Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001724670-19-000138-index-headers.html | 2019-11-13 17:19:56 | |
| 0001724670-19-000138-index.html | 2019-11-13 17:19:56 | |
| 0001724670-19-000138.txt | 2019-11-13 17:19:56 | |
 0001724670-19-000138-xbrl.zip | 197590 | 2019-11-13 17:19:56 |
| FilingSummary.xml | 38671 | 2019-11-13 17:19:56 |
| Financial_Report.xlsx | 79648 | 2019-11-13 17:19:56 |
 perslogopriblutmrgba23.jpg | 94607 | 2019-11-13 17:19:56 |
| prsp-20190930.xml | 1736029 | 2019-11-13 17:19:56 |
| prsp-20190930.xsd | 47048 | 2019-11-13 17:19:56 |
| prsp-20190930_cal.xml | 96417 | 2019-11-13 17:19:56 |
| prsp-20190930_def.xml | 199839 | 2019-11-13 17:19:56 |
| prsp-20190930_lab.xml | 637419 | 2019-11-13 17:19:56 |
| prsp-20190930_pre.xml | 375401 | 2019-11-13 17:19:56 |
| prsp930201910-q.htm | 1359591 | 2019-11-13 17:19:56 |
| prsp930201910-qex101.htm | 155135 | 2019-11-13 17:19:56 |
| prsp930201910-qex311.htm | 15276 | 2019-11-13 17:19:56 |
| prsp930201910-qex312.htm | 15316 | 2019-11-13 17:19:56 |
| prsp930201910-qex321.htm | 8130 | 2019-11-13 17:19:56 |
| prsp930201910-qex322.htm | 7978 | 2019-11-13 17:19:56 |
| R1.htm | 27890 | 2019-11-13 17:19:56 |
| R10.htm | 11243 | 2019-11-13 17:19:56 |
| R11.htm | 44691 | 2019-11-13 17:19:56 |
| R12.htm | 185983 | 2019-11-13 17:19:56 |
| R13.htm | 38079 | 2019-11-13 17:19:56 |
| R14.htm | 7536 | 2019-11-13 17:19:56 |
| R15.htm | 8965 | 2019-11-13 17:19:56 |
| R16.htm | 12650 | 2019-11-13 17:19:56 |
| R17.htm | 59430 | 2019-11-13 17:19:56 |
| R18.htm | 168473 | 2019-11-13 17:19:56 |
| R19.htm | 27978 | 2019-11-13 17:19:56 |
| R2.htm | 43131 | 2019-11-13 17:19:56 |
| R20.htm | 9071 | 2019-11-13 17:19:56 |
| R21.htm | 9065 | 2019-11-13 17:19:56 |
| R22.htm | 12671 | 2019-11-13 17:19:56 |
| R23.htm | 103693 | 2019-11-13 17:19:56 |
| R24.htm | 13633 | 2019-11-13 17:19:56 |
| R25.htm | 6255 | 2019-11-13 17:19:56 |
| R26.htm | 28483 | 2019-11-13 17:19:56 |
| R27.htm | 38770 | 2019-11-13 17:19:56 |
| R28.htm | 181109 | 2019-11-13 17:19:56 |
| R29.htm | 37066 | 2019-11-13 17:19:56 |
| R3.htm | 13406 | 2019-11-13 17:19:56 |
| R30.htm | 57061 | 2019-11-13 17:19:56 |
| R31.htm | 105276 | 2019-11-13 17:19:56 |
| R32.htm | 26413 | 2019-11-13 17:19:56 |
| R33.htm | 102012 | 2019-11-13 17:19:56 |
| R34.htm | 4293 | 2019-11-13 17:19:56 |
| R35.htm | 9244 | 2019-11-13 17:19:56 |
| R36.htm | 32994 | 2019-11-13 17:19:56 |
| R37.htm | 43688 | 2019-11-13 17:19:56 |
| R38.htm | 25236 | 2019-11-13 17:19:56 |
| R39.htm | 20071 | 2019-11-13 17:19:56 |
| R4.htm | 86262 | 2019-11-13 17:19:56 |
| R40.htm | 20255 | 2019-11-13 17:19:56 |
| R41.htm | 24829 | 2019-11-13 17:19:56 |
| R42.htm | 10205 | 2019-11-13 17:19:56 |
| R43.htm | 5092 | 2019-11-13 17:19:56 |
| R44.htm | 26997 | 2019-11-13 17:19:56 |
| R45.htm | 8604 | 2019-11-13 17:19:56 |
| R46.htm | 9334 | 2019-11-13 17:19:56 |
| R47.htm | 34913 | 2019-11-13 17:19:56 |
| R48.htm | 42920 | 2019-11-13 17:19:56 |
| R49.htm | 43100 | 2019-11-13 17:19:56 |
| R5.htm | 22846 | 2019-11-13 17:19:56 |
| R50.htm | 19838 | 2019-11-13 17:19:56 |
| R51.htm | 17644 | 2019-11-13 17:19:56 |
| R52.htm | 22035 | 2019-11-13 17:19:56 |
| R53.htm | 9105 | 2019-11-13 17:19:56 |
| R54.htm | 13083 | 2019-11-13 17:19:56 |
| R55.htm | 38556 | 2019-11-13 17:19:56 |
| R56.htm | 10766 | 2019-11-13 17:19:56 |
| R57.htm | 8171 | 2019-11-13 17:19:56 |
| R58.htm | 13819 | 2019-11-13 17:19:56 |
| R59.htm | 7831 | 2019-11-13 17:19:56 |
| R6.htm | 76992 | 2019-11-13 17:19:56 |
| R60.htm | 9475 | 2019-11-13 17:19:56 |
| R61.htm | 35998 | 2019-11-13 17:19:56 |
| R62.htm | 25391 | 2019-11-13 17:19:56 |
| R63.htm | 28643 | 2019-11-13 17:19:56 |
| R64.htm | 10513 | 2019-11-13 17:19:56 |
| R65.htm | 15223 | 2019-11-13 17:19:56 |
| R66.htm | 11351 | 2019-11-13 17:19:56 |
| R7.htm | 5155 | 2019-11-13 17:19:56 |
| R8.htm | 103034 | 2019-11-13 17:19:56 |
| R9.htm | 20503 | 2019-11-13 17:19:56 |
| R9999.htm | 4644 | 2019-11-13 17:19:56 |
| report.css | 2767 | 2019-11-13 17:19:56 |
| Show.js | 1085 | 2019-11-13 17:19:56 |